Samsung, SK Hynix Bet 800 Trillion Won on Expansion as Optical HBM Looms to Reshape DRAM Landscape - BigGo Finance

The 800 trillion KRW investment is Korea’s strategic bet ahead of a foundational shift in AI hardware architecture. If optical HBM overcomes yield barriers in photonics integration and packaging, it will upend the current DRAM-ASIC co-design paradigm, forcing TSMC, Micron, and packaging firms in Taiwan, China to overhaul roadmaps. While Korean subsidies mitigate compliance costs, geopolitical exposure remains—tightened U.S. export controls on advanced packaging tools could disrupt SK Hynix’s China-based capacity allocation. Micron will likely accelerate CPO partnerships, while Yangtze Memory may exploit the HBM3E substitution window. Within 18 months, optical HBM won’t scale commercially, but its looming presence compels the entire industry to front-load R&D spending, triggering asymmetric competition: players with silicon photonics integration will dictate AI memory pricing, relegating others to foundry-tier roles.